- Add StatusBleed and StatusCurse to the status effect enum
- Rewrite TickEffects with index-based loop to support Bleed value mutation
- Add Freeze tick message, Bleed damage (intensifies each turn), Curse message
- Update Heal() to reduce healing amount when cursed
- Add tests for Bleed stacking, Curse heal reduction, and Freeze tick message
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>